阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Peter lived in a village. He was always upset and treated others (bad). He enjoyed himself by making other (villager) unhappy. So the whole village avoided (he) as much as they could. On the day when he turned eighty, unusual thing happened. Everyone (hear) the words. "Peter looks happy today. Instead of (say) something bad, he smiles to everyone he meets." When the whole village got together, Peter (ask) why. He answered," I'd been running after my happiness eighty years, but it was (use). And then I decided to live without it and just enjoy life. That's the reason I'm happy now.